PPC linux v2.6.11 network configuration hangs

["Pari Subramaniam" <pari@gdatech.com>]

Hi,

We have 8540 based board running PPC port ver-2.4.30-pre1. when I tried =
to
upgrade to ver-2.6.11, the network interface loops (enabled TSEC alone)
indefinitely in the gfar_probe() at the following while loop:


        /* Stop the DMA engine now, in case it was running before */
        /* (The firmware could have used it, and left it running). */
        /* To do this, we write Graceful Receive Stop and Graceful */
        /* Transmit Stop, and then wait until the corresponding bits */
        /* in IEVENT indicate the stops have completed. */

        tempval =3D gfar_read(&priv->regs->dmactrl);
        tempval &=3D ~(DMACTRL_GRS | DMACTRL_GTS);
        gfar_write(&priv->regs->dmactrl, tempval);

        tempval =3D gfar_read(&priv->regs->dmactrl);
        tempval |=3D (DMACTRL_GRS | DMACTRL_GTS);
        gfar_write(&priv->regs->dmactrl, tempval);
/*---------------------------------stays in this loop for
ever--------------------------------*/
        while (!(gfar_read(&priv->regs->ievent) & (IEVENT_GRSC | =
IEVENT_GTSC)))
                cpu_relax();
/*-----------------------------------------------------------------------=
-------
--------------*/

MPC8540 based system running boot loader U-Boot version-1.1.2. The TSEC =
port is
tested from the boot loader. The same behavior observed in all the =
boards.

I appreciate any help in this regard.

Thanks in advance

regards
-pari =20